How to Preserve JSON Integer Precision in Go?

Navigating JSON Number Precision in Go

When parsing JSON in Go, integers larger than 32 bits may be automatically converted to float64 values by the default JSON decoder. This poses a challenge when you need to preserve the accuracy of such integers.

One solution to this issue is to use a custom decoder and employ the UseNumber method. This enables you to decode numbers into a json.Number type, which can easily be converted back to an integer.

Alternatively, you can design a custom data structure to match your JSON schema, which can handle integers of any size.

Keep in mind that if your application communicates with JavaScript, which lacks true 64-bit integers, you may encounter data loss during marshalling and unmarshalling.

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